Arsen Losenko arsenlosenko

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

Sessions

New Session

tmux new [-s name] [cmd] (:new) - new session

Switch Session

tmux ls (:ls) - list sessions
tmux switch [-t name] (:switch) - switches to an existing session

Sans jQuery

Events

// jQuery
$(document).ready(function() {
  // code
})

About programms

Often referred to as the "swiss army of knife" for TCP/IP networking, [Netcat][1] is an extremely versatile Linux utility that allows you to do anything under the sun using TCP/UDP sockets. It is one of the most favorite tools for system admins when they need to do networking related troubleshooting and experimentation.

In this tutorial, I am sharing a few useful netcat examples, although the sky is the limit when it comes to possible netcat use cases. If you are using netcat regularly, feel free to share your use case.

Note that when you are binding to well-known ports (0-1023) with nc, you need root privilege. Otherwise, run nc as a normal user.

1. Test if a particular TCP port of a remote host is open.

$ nc -vn 192.168.233.208 5000

WebSockets - An Introduction

WebSockets is a modern HTML5 standard which makes communication between client and server a lot more simpler than ever. We are all familiar with the technology of sockets. Sockets have been fundamental to network communication for a long time but usually the communication over the browser has been restricted. The general restrictions

The server used to have a permanent listener while the client (aka browser) was not designated any fixed listener for a more long term connection. Hence, every communication was restricted to the client demanding and the server responding.
This meant that unless the client requested for a particular resource, the server was unable to push such a resource to the client.
This was detrimental since the client is then forced to check with the server at regular intervals. This meant a lot of libraries focused on optimizing asynchronous calls and identifying the response of asynchronous calls. Notably t

	[user]
	name = Pavan Kumar Sunkara
	email = [email protected]
	username = pksunkara
	[init]
	defaultBranch = master
	[core]
	editor = nvim
	whitespace = fix,-indent-with-non-tab,trailing-space,cr-at-eol
	pager = delta

	#!/bin/bash

	SESSION=$USER

	# if the session is already running, just attach to it.
	tmux has-session -t $SESSION
	if [ $? -eq 0 ]; then
	tmux attach -t $SESSION
	exit 0;
	fi